A past fishing buddy (now deceased) had a custom mold almost exactly as you have there. I was hoping to get the mold when he passed, but the entirety of his fishing estate was sold outside of my knowledge. Since the mold was never made available to me, I have just continued to fish with the screw-lock shaky head.
BUT, now that the mold (or a very similar rendition) is available, it seems destined to replace my former favorite bottom crawling craw rig... I can't wait for this to become available to the general public (and I can't wait to try it for big smallies just below sand drops)!